What does the term 'release' refer to in forestry practices?

In forestry practices, the term 'release' specifically refers to the selective application of herbicides to help promote the growth of desired tree species by reducing competition from unwanted vegetation. This technique is essential in forestry management as it allows for more efficient use of resources by targeting specific plants that hinder the growth of desirable trees. By using herbicides selectively, forestry professionals can create a more favorable environment for the target species, which can lead to healthier forests and improved timber yields.

Other options like transplanting mature trees, clearing land for new growth, and restoring natural water sources do not encompass the concept of 'release' in the context of reducing competition for resources in existing stands of trees. Instead, they refer to different forestry activities that have distinct purposes and outcomes in forest management.